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Add Your Company Slogan Internet Searching

Internet searchingnewver

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Page 1: Internet searchingnewver

Add Your Company Slogan

Internet Searching

Page 2: Internet searchingnewver

Group Members

Nashfa1

Zabir2

Visala3

Azhar4

Zaha5

Page 3: Internet searchingnewver

Contents

Introduction1

Directories2

Search Engines 3

MetaSearch Engines 4

Search Strategies 5

Page 4: Internet searchingnewver

Introduction

With the arrival of the WWW came the widespread availability of online

information

Answers to your questions are somewhere on the web, but how do

you locate them?

Page 5: Internet searchingnewver

DIRECTORIES

• Method of finding and organizing web information

• Offers a hierarchical representation of hyperlinks to web pages and presentations broken down to topics and subtopics

• Review and classified by human editors

Page 6: Internet searchingnewver

Directories : classification

General Specialized

• Also called web directory or subject directory

• Top level provides a wide range of broad topics. E.g. Music / Entertainment.

• Also called subject guides or gateway pages

• Deals with a variety of topics. E.g. law, medicine.

BenefitsEasy to use

Need not know what you are looking for

Page 7: Internet searchingnewver

Search Engines : introduction

• A computer program• Submit a query describing the

information you want to locate• Searches its databases to try and

match your query• Collates and returns a list of URL’s

which matches your query• Permits you to revise and resubmit

a query

Page 8: Internet searchingnewver

Search engines : classification

General Specialized

• Also called vertical search engine or a topic search engine

• Retrieves information from a database that contains information on a wide variety of topics

• Provides in-depth information on specific topics that may be valuable

• Exists for a multitude of topics• MP3s• Shopping• News etc

Not as easy to use as directories. WHY??

Page 9: Internet searchingnewver

Metasearch Engines

• Does not have their own database of information

• Calls many search engines to do the actual work

Advantage:

You can access a number of different search engines with a single query

Disadvantage:

You will get a lot of results which will not be of interest to you. Therefore you will spend a lot of time evaluating the results and deciding which link to follow

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Directories and search engines : Popular

MetaSearch Engines

Directories Search Engines

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Boolean Queries : AND operator

A

A

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A

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A

BB

BB

BB

BB

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BB

B B

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Boolean Queries : OR operator

A

A

A

A

A

A

A

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BB

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B B

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Search Strategies

• Determine which search engine• Possesses a user-friendly interface• Has a easy-to-understand, comprehensive

documentation• Is convenient to access; that is you do not

have to wait several minutes before being able to submit a query

• Contains a large database• Does a good job in assigning relevancy

scores

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Exercise

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THANK YOU